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  1. #1
    Senior Member bikemig's Avatar
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    Stump the Chump (Day 1)

    So I started fixing up a Stumpjumper Comp from, I believe, 1988. It has all original parts (Deore XT) except for the front cantilevers (it has a rear U brake). The bike has barely been ridden but it has some issues that I need some help with.

    (1) So I have no idea what is the tool I need to remove the 6 speed cassette. I'm attaching a pic.
    (2) The locknut for the stem is frozen in the headtube. I shot it full of WD 40 and we'll see what happens. Any great ideas for how to get it out?
    (3) The seatpost binderbolt for the saddle is frozen. I shot it full of WD 40; any great ideas for how to loosen it up?

    Other than that, I overhauled the front hub and it is in prima shape. The bb looked almost brand new but it was ruined because some cretin overtightened it. It has biopace chain rings and the cool quasi-motorbike brake lever protectors that mountain bikes used to have (like I said, other than the front cantis and the saddle, this bike is, I believe, pretty much original). This bike has very few miles on it and will make a great bike once I get it fixed up:

    Stump.jpgStumpFront.jpgStumpCassette.jpg

  2. #2
    Constant tinkerer FastJake's Avatar
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    That's an old Uniglide cassette. You need two chainwhips or one chainwhip and the bicycle to remove it (the last cog is threaded on and holds the rest together.) But if you are just repacking the rear hub you do not need to remove the cassette at all.

    Good luck on the seatpost and stem. There is tons of info online about removing stuck parts. First thing I try is PB Blaster. Kroil is great stuff too if you can find it.
    Why "derailer" is the correct way to spell the gear-change mechanism: sheldonbrown.com/derailer.html

  3. #3
    Senior Member bikemig's Avatar
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    Duh, thanks. I totally forgot about using 2 chain whips. It has been a long, long time since I worked on a uniglide cassette. I was looking at cassette and couldn't imagine a tool that would work, lol. I'll look for PB blaster as well. It's too bad because this bike simply has not been used. I couldn't believe how little wear there was bearing surfaces on the front hub and how immaculate the parts are in terms of wear.

  4. #4
    Retro Grouch onespeedbiker's Avatar
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    (2) The locknut for the stem is frozen in the headtube. I shot it full of WD 40 and we'll see what happens. Any great ideas for how to get it out?
    I assume your talking about the wedge bolt in the quill stem. The easiest way I know is to unscrew the bolt about 5-10 mm and then whack it with a hammer; it usually comes loose.

  5. #5
    Senior Member bikemig's Avatar
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    Quote Originally Posted by onespeedbiker View Post
    I assume your talking about the wedge bolt in the quill stem. The easiest way I know is to unscrew the bolt about 5-10 mm and then whack it with a hammer; it usually comes loose.
    yeah, I'm thinking it is time to take a hammer and punch to it. The wedge bolt is deep inside the headset and stuck fast. The bolt that fixes the plate that holds the saddle is a whole other story. It's shame because this bike has clearly almost never been ridden but it has been abused by neglect and by someone who overtightened some of the parts.

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